Floor surfacer, cleaner, and polisher.



No. 728,423. PATENTED MAY19,1"903. A. T. SPBNOE, J. H. PRUGH & S.'B. ZIMMER."

FLOOR SURFAGER, CLEANER, AND POLISHER.

APPLIOAT on ML '1' .24. 1902. no MODEL. '7 ED EB 2 sump-8111:1511.

| EYERS 50.. mow-ume WASHINGTON. u c.

U ITED Fatented lllfay 19, 1903 OFFICE.

AARON T. sPENcnoF ALAMEDA, AND JOHN H. PRUGH AND SAMUEL 13.

ZIMMER, OF OAKLAND, CALIFORNIA.

' FLOOR SURFACER, CLEANER, AND POLISHE'R.

$FECIFICATIOH forming part of Letters Patent No. 728,423, dated HMS. Application filed February 24.1902. Serial No. 95,236. (No model.)

To CLZLZUh/OUY/ it may concern:

Be it known that we, AARON T. SPENcE, residing at Alameda, and JOHN H. PRUGH and SAMUEL B. ZIMMER, residing at Oakland, county of Alameda, and Stateof California,

I citizens of the United States,- have invented grinding or polishing those of mosaic, marble,

or any composition.

Our invention consists of certain features of construction and combination of parts, which are hereinafter described'and particularly claimed.

In the accompanying drawings, Figure lis a side view of the machine. Fig. 2 represents the rear end of the same. Fig. 3 is a view of the machine below the table hereinafter mentioned looking down. Fig. 4 is a longitudinal section of thesameion line 1 and 2 of Fig. 3. Fig. 5 is a view of said table, showing parts of the machine and the place where the operator of the same'should stand,

designated as Z. Fig. 6 is a transverse sec- 7 tion of the main carriage-wheels and parts of the mechanism for the forward and rear ward movement of the machine. Fig. 7 is a vertical section of parts of the device for rais- 7 ing the rollers hereinaftermentioned. Fig. 8 is an isometrical View of the device for raising and lowering the rollers and connections.

Referring to the drawings, A represents a lever to apply power for the adjustment of the rollers hereinafter mentioned and to impel the machine forward or backward, as may be desired.

A indicates the position of the lever when the machine is at rest and the rollers are above the floor, and A its position when said machine is moving backward and the rollers are in contact with the floor.

B representsapartial' view of an electric motor, which may be? of any suitable type giving sufficient power to run the machine.

0 represents rollers to be covered with sandpaper for cleaning or surfacing wood floors of every kind or with felt or any other suitable material for polishing floors or with emery or emery-cloth for grinding and polishing mosaic, marble, or composition floors. The position of. theflever when the machine is moving forward-isas appears in Fig. lof the drawingsfat A. U k

D represents the main carriage wheels, which are each filled or p'rovidedwith arubber band-or tire to prevent the detrimentof the flooiaover which it moves. The front carriage-wheels, which are shown at E, are likewise bound with rubber and by the turning of which to. either side the steering of the machine is accomplished.

F shows the propelling-wheel or driver which works on shaft f, and by the sliding of the same sufliciently either way on a pin attached to said shaft the same will engage f riction-wheel G, which is driven-by the wormgearing on shafts g and b, the operation of lever A causing the said engagement of said wheels within the depression between the two' 'a desired point within one of said slots. through the tightening of nut 12 on bolt through said slot and therelease of catch attached to said lever sufficient leverage is obtained to force wheel G against one of the sections of wheel F to propel the machine either way, as may be desired.

Arms 1", carrying rollers c and having boxes at the ends of shafts d and e, are shown in Fig. 1. The same are also supported and move in boxes w at a point approximate the;

The said arms r may be adjusted at center. 7 their inner ends by clasps t, as shown, which clasps by the movement of shaft S may be forced up or down, as desired. This shaft having arms or levers at each end will raise or lower the clasps when lever A is moved either way, and thus also raise or lower the ICC inner ends of arms r, resulting in the depression or elevation of the outer ends of said arms and of the rollers there supported.

In Fig. 8 the device for raising and lowering such rollers is particularly shown. Lever A is shown pivotally connected to rod or bar a, which rests on the small pulley at the upper end of the curved bar I). The forcing down of the end of said barb causes the same to act on shaft S, which passes through said bar, as shown, and is secured by a set-screw. The turning of shaft S turns the cranks at each end of shaft S, said cranks being fastened to shaft S by set-screws, as shown. The said cranks are secured to clasps t, the inner ends of the arms r penetrating said clasps, as described.

By the operation of wheel the machine may be steered. Said wheel is attached to a shaft having at its end worm-gear g, which connects it to shaft '7. At its other end said shaft 7 is connected by an arm to cross tiebar 8, and said tie-bar is connected by arms to pinions secured to the front carriagewheels E.

The turning of wheel either way causes the movement of shaft 7, thereby moving tiebar 8 and subsequently directing the machine to the right or left, as may be desired.

L representsa lock-bar which is pivoted to the curved bar I) and which is securable in jaws or notch in the table above its place of connection. The same is intended to be operated by pushing it into the jaws when the rollers are up, and they are thereby held in that position. 'lhereupon lever A may be worked either way for applying the mechanism for propelling the machine forward or backward, as may be desired, and bar a will operate above the pulley in the curved bar without actuating shaft S. The said bar or shaft a works through a guide-block (shown in Figs. 7 and 8) and which is secured to a cross tie-bar by screws. Lock-bar L is preferably forced into the jaws or notch intended to receive it by pushing with the foot. \Vheel D is fixed firmly on shaft with which it revolves. 'lhrusting-wheeln is in contact with the propelling-wheel F when it is moved on shaftf in the direction desired. Through the operation of lever A the said wheel n is turnable on the spindle N, having the curvature shown at min Fig. 4, and by the turning of which wheel F is moved, as mentioned, and the upper end of which is secured to-rod 0, running to and connected with lever A, by which it is operated.

to designates a tie-rod to hold the frame of the machine together, and Z an iron brace to support the upper frame.

, (1,1), 0, d, and 6 represent shafts which run transversely to the machine, (1 and 6 running through rollers O and are turnable by pulleys 4 and 5, respectively, which are propelled by the revolution of shafts b and c and pulleys 2 and 3, as shown. a is the shaft passing through the motor.B and has pulley 1 which drives pulley 6 on shaft 1) and which in turn drives cog-wheel h, the latter driving cog-wheel i, which turns shaft 0. Shaft b by means of Worm-gearing drives shaft g, having paper friction-wheel G, operating as hereinbefore set forth. At the ends of shaft f the main carriage-wheels D turn therewith for the propulsion of the machine in the direction desired. 7'

In each roller (1, t represents a slot, which has a clamp to secure the covering of the roller by screwing down the same and m is a rubber bumper to protect the walls of the room in which the machine may run from injury in contact therewith.

It may be necessary to add that pulleys 1, 2, 3, 4, 5, and 6 are driven by belts, as appears in the drawings.

The machine is so constructed as to be able to run close to the walls of the room in which the work required is intended to be done, and the direction of its operation can be easily changed by the use of the steering device hereinbefore mentioned. The rollers 0 run in opposite directions, and consequently will not cause the movement of the machine; but the same must be effected by the devices hereinbefore mentioned as employed therein. Upon the motion of the machine being reversed the working of shaft ct by means of lever A raises the rollers G from the floor, so that they cannot mar the same on which they are intended to operate when the motor is still in operation and the said rollers and the machine are not moving. n represents a bolt through the bracket on side of frame to adjust roller 0. By screwing the same up or down rollers on arm 7" can be adjusted to run level with the floor, as well as accomplish the adjustment of the weight of the roller on such floor.

Springs are shown at y to allow the rollers to rise from the floor in case of meeting ob structions thereon; also, to cause arms 0' to bear tightly against bolts it.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is-

1. In a floor surfacer, cleaner and polisher the combination with rollers covered with material for acting upon floors, centrally-pivoted arms adapted to hold said rollers and to raise and lower them from the floor, springs and screws for limiting the play of the inner ends of said arms, rubber-bound carriage-Wheels, a lever having at its lower end a pivoted arm working through a guide-block and operating upon a curved bar and connections whereby a clasp covering the inner ends of the arms attached to said rollers may be depressed or allowed to rise so as to raise or lower said rollers, a rod jointed to said curved bar and securable in jaws for holding up said rollers, a propelling-wheel slidable upon the shaft with which it turns and having two sections adapted to be alternately engaged with a friction-wheel for the forward or rearward movement of the machine, a thrusting-wheel turnable on a vertical and curved shaft for the lateral movement of said propelling-wheel on the shaft on which it is mounted, a curved plate having slots with bolts securable therein whereby said lever maybe held firmly by means of a catch attached thereto, and means for steering said machine substantially as shown and described.

2. In a floor surfacer, cleaner and polisher the combination with rollers covered with material for acting upon floors, centrally-pivoted arms adapted to hold said rollers and to raise and lower them from the floor, springs and screws for limiting the play of the inner ends of said arms, rubber-bound carriage-wheels, a lever having at itslower end a pivoted arm working through a guide-block andoperating upon a curved barand connect-ions whereby a clasp covering the inner ends of the arms attached to said rollers may be depressed or allowed to rise so as to raise or lower said rollers, a rod jointed tosaid curved bar and securable in jaws for holding up said rollers, a propelling-wheel slidable upon the shaft with which it turns and having two sections adapted to be alternatelyengaged with a friction-wheel for the forward or rearward movement, of the machine, a thrusting-wheel turnable on a vertical and curved shaft for the lateral movement of said propelling-wheel on the shaft on which it is mounted, acurved plate having slots with bolts securable tlierein whereby said lever may be held firmly by means of a catch attached thereto, and a wheel turningahorizontal shaft having wormgearing operating a vertical shaft the same being connected by an arm to a cross tie-bar, and said bar having arms in connection with pinions secured to the'front carriage-wheels of the machine substantially as shown and described. r

3. In a'floor surfacer, cleaner and polisher the combination with a table or platform sup-- guide-block and operating upon a curved bar.

and connections whereby a clasp covering the inner ends of said arms may be depressedor allowed to rise so as to raise or lower said rollers, a rod jointed to a curved bar and securable in jaws for holding up said rollers, a propelling wheel slidable on a shaft with which it turns and having two sections adapted to be alternately engaged with a frictionwheel for the forward and rearward movement of the machine, a thrusting-wheel turnable on a vertical'andcurved shaft for the lateralmovement of said propelling-wheel on the shaft on which it is mounted, means for holding firmly in a desired position a lever for applying power and mechanism to move said machine and a wheel turninga horizontal shaft having wormrgearing operating a vertical shaft, the same beingconnected by an arm to a cross tie-bar and said bar having arms in connection with pinions secured to the front supporting-wheels of'the machine substantially as shown and described.

4. In a floor surfaoer, cleaner and polisher the combination with transverse rollers cov-j ered with material for acting upon floors connected to a frame mounted on rubberbound carrying-wheels, centrallypivoted arms supporting said rollers at their outer ends turnable thereon, a clasp inclosing the inner ends of said arms in connection with springs and bolts for controlling the movement thereof, a lever having an attachment for securing the same to an adjustable bolt securable in a slotted curved plate attached,

to said frame,'a propelling-wheel slidable on the shaft with which it turns and having two sections adapted to be alternately engaged, with a friction-wheel for the forwarder rear mechanism substantially as shown and specified and for the purpose described.

' 5. In a floor surfacer, cleaner and polisher t the combinationwith a frame-and carryingwheels, rollers covered with material foracting upon floors, means for. securing said material to said rollers, centrally-pivoted arms adapted to hold said rollers and to raise and lower them from the floor, springs and screws for limiting the play of the inner ends of said arms, a lever having at itslower end a pivoted arm working through a guide-block and op erating upon a curved bar and connections whereby a clasp covering the inner ends of said arms attached to said rollers may be de pressed or allowed to rise so as to raise or lower said rollers, a rod jointed to said curved barfor holding up said rollers, a propellingwheel'slidable upon the shaft with which it turns and means for ,changingCthe direction of its revolution, a curved plate having slots with bolts securable therein whereby said lever may be held firmly by means of a catch attached thereto, and awheel turningahori= zontal shaft having worm-gearing operating a vertical shaft, the same being connected by an arm to a cross tie-bar and said bar having arms in connection with pinions secured to the front carrying-wheels of, the machine for steering the same, substantially as shown and described. 7 l

6. In a floor surfacer, cleaner and polisher' IIO the combination of the following in'strumen &

talities, viz: a frame mounted on carryingwheels, centrally pivoted arms attached thereto, the outer ends thereof supporting rollers covered with material for acting upon floors, means for limiting the .play of the inner ends of said arms, a lever having at its lower end a pivoted arm working through a guide-block and operating upon a curved bar and connections whereby a clasp covering the inner ends of the said arms attached to said rollers may be depressed or allowed to rise so as to raise or lower said rollers, means for holding up said rollers at the will of the operator, a propelling-wheel slidable upon the shaft with which it turns and having two sections each adapted to be so engaged with a friction-wheel as to compel the forward or rearward movement of the machine, means for the lengthwise movement of said propelling-wheel on the shaft on which it is mounted, a curved blade having slots with bolts securable therein whereby said lever may be held firmly by means of a catch attached thereto and means for steering said machine, substantially as shown and described.

7. In a floor surfacer, cleaner and polisher the combination of the following instrumentalities, viz: a frame mounted on carrying- Wheels, centrally pivoted arms attached thereto, the outer ends thereof supporting rollers turning thereon, said rollers being covered with material for acting upon floors,

springs and screws for limiting the play of the inner ends of said arms, a lever having at itslower end apivoted arm working through a guide-block and operating upon a curved bar and connections whereby a clasp covering the inner ends of said arms attached to said rollers may be depressed or allowed to rise so as to raise or lower said rollers, a rod jointed to said curved bar and securable in jaws for holding up said rollers, a propelling-wheel slidable upon the shaft with which it turns, and means for changing the direction of its revolution, a curved plate having slots with bolts securable therein, whereby said lever may be held firmly by means of a catch attached thereto, and a wheel turning a horizontal shaft having worm-gearing operating a vertical shaft, the same being connected by an arm to a cross tie-bar and said bar having arms in connection with pinions secured to the front carrying-wheels of the machine for steering the same, substantially as shown and described.

In testimony whereof we allix our signa' tin-es in presence of two witnesses.

AARON T. SPENCE. JOHN H. PRUGH. SAMUEL B. ZIMMER.

lVitnesses:

HENRY PARKER, FRED B. W001). 

